ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A6/42

DTC Code DTC Name
C13A6/42 Open or Short in Circuit of Motor

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13A6/42 Open or Short in Circuit of Motor

Both of following conditions are met:


  1. Engine switch on (IG) or electric parking brake switch (combination switch assembly) pulled to lock side with engine switch off.

  2. Power supply voltage and +B voltage are normal, but parking brake motor circuit is malfunctioning for approximately 1 to 2 seconds.

  • Parking brake actuator assembly

  • Wire harness or connector

  • Parking brake ECU assembly

 DTC stored An electric parking brake system malfunction is displayed on the multi-information display.

WIRING DIAGRAM

B006Q8IE03

CAUTION / NOTICE / HINT

Note


  • Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.

  • When replacing the parking brake ECU assembly, operate the electric parking brake switch (combination switch assembly) as the parking brake indicator light blinks (red) when the engine switch is first turned on (IG).

PROCEDURE


  1. READ VALUE USING GTS (RH ACTUATOR MOTOR MALFUNCTION(OPEN/SHORT) / LH ACTUATOR MOTOR MALFUNCTION(OPEN/SHORT))


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / Electric Parking Brake / Data List.

    6. Read the Data List according to the display on the GTS.


      Chassis > Electric Parking Brake > Data List
      Tester Display Measurement Item Range Normal Condition
      RH Actuator Motor Malfunction(Open/Short) Parking brake motor RH (parking brake actuator assembly RH) circuit open or short Detected Malfunction or No Detected Malfunction No Detected Malfunction
      LH Actuator Motor Malfunction(Open/Short) Parking brake motor LH (parking brake actuator assembly LH) circuit open or short Detected Malfunction or No Detected Malfunction No Detected Malfunction

      Chassis > Electric Parking Brake > Data List
      Tester Display
      RH Actuator Motor Malfunction(Open/Short)
      LH Actuator Motor Malfunction(Open/Short)
      Result
      Proceed to
      NEXT

    NEXT

  2. INSPECT PARKING BRAKE WIRE ASSEMBLY

    B006OHBC03
    *A RH *B LH
    *a Front view of Parking Brake Wire Assembly *b (to wire harness connector)
    *c (to Parking Brake Actuator Assembly) - -

    1. Remove the parking brake wire assembly.

      Click here

    2. Check the parking brake wire assembly for damage.

      OK
      No damage.

      Tech Tips

      If damaged, there may be a short in the wire harness or a short to ground.

    3. Inspect the parking brake wire assembly.

      Standard Resistance
      RH
      Tester Connection Condition Specified Condition
      Lf1-1 (MRR-) - f1-1 (MRR-) Always Below 1 Ω
      Lf1-1 (MRR-) - f1-2 (MRR+) Always 10 kΩ or higher
      Lf1-1 (MRR-) or f1-1 (MRR-) - Body ground Always 10 kΩ or higher
      Lf1-2 (MRR+) - f1-2 (MRR+) Always Below 1 Ω
      Lf1-2 (MRR+) - f1-1 (MRR-) Always 10 kΩ or higher
      Lf1-2 (MRR+) or f1-2 (MRR+) - Body ground Always 10 kΩ or higher
      LH
      Tester Connection Condition Specified Condition
      Kf1-1 (MRL-) - f2-1 (MRL-) Always Below 1 Ω
      Kf1-1 (MRL-) - f2-2 (MRL+) Always 10 kΩ or higher
      Kf1-1 (MRL-) or f2-1 (MRL-) - Body ground Always 10 kΩ or higher
      Kf1-2 (MRL+) - f2-2 (MRL+) Always Below 1 Ω
      Kf1-2 (MRL+) - f2-1 (MRL-) Always 10 kΩ or higher
      Kf1-2 (MRL+) or f2-2 (MRL+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARKING BRAKE WIRE ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - PARKING BRAKE ACTUATOR ASSEMBLY)


    1. Turn the engine switch off.

    2. Make sure the parking brake wire assembly is securely installed.

    3. Disconnect the K15 parking brake ECU assembly connector.

    4. Disconnect the f1 or f2 parking brake actuator assembly connector.

    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      RH
      Tester Connection Condition Specified Condition
      K15-1 (MRR+) - f1-2 (MRR+) Always Below 1 Ω
      K15-3 (MRR-) - f1-1 (MRR-) Always Below 1 Ω
      K15-1 (MRR+) or f1-2 (MRR+) - Body ground Always 10 kΩ or higher
      K15-3 (MRR-) or f1-1 (MRR-) - Body ground Always 10 kΩ or higher
      LH
      Tester Connection Condition Specified Condition
      K15-4 (MRL+) - f2-2 (MRL+) Always Below 1 Ω
      K15-6 (MRL-) - f2-1 (MRL-) Always Below 1 Ω
      K15-4 (MRL+) or f2-2 (MRL+) - Body ground Always 10 kΩ or higher
      K15-6 (MRL-) or f2-1 (MRL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY


    1. Inspect the parking brake actuator assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here

    NG

    REPLACE PARKING BRAKE ACTUATOR ASSEMBLY Click here